F - Mech Eng,Light,Heat,Weapons – 23 – C
Patent
F - Mech Eng,Light,Heat,Weapons
23
C
F23C 7/00 (2006.01) F23M 99/00 (2010.01) F23C 5/00 (2006.01) F23D 14/04 (2006.01) F23D 14/22 (2006.01) F23N 5/24 (2006.01) F24H 1/20 (2006.01) F24H 3/04 (2006.01) F23M 13/00 (2006.01)
Patent
CA 2101239
GAS-FIRED HEATERS WITH BURNERS WHICH OPERATE WITHOUT SECONDARY AIR ABSTRACT OF THE DISCLOSURE A gas-fired burner apparatus (2) includes a porous combustion surface (5) disposed in a combustion chamber (8) substantially sealed to prevent entry of secondary combustion air. A subatmospheric pressure is maintained in the combustion chamber (8) by a natural or aspirated draft. The subatmospheric pressure cooperates with an aspirating flow of fuel to the burner apparatus (2) to provide an increased flow of primary combustion air which reduces the combustion temperature and the emission of pollutants. Alternatively, the subatmospheric pressure may be used to achieve a given flow of primary combustion air with a reduced combustion surface area. In both cases the risk of igniting inflammable vapour that may be present around the heater is eliminated by preventing secondary air from contacting the flame front. Water heater (1) and room heater applications of the burner apparatus are illustrated.
Bowin Technology Pty. Limited
Gowling Lafleur Henderson Llp
LandOfFree
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